Wuhan may not be a well-known Chinese mega-city like Beijing or Shanghai.
But the place where the coronavirus outbreak emerged is, in fact, a crowded metropolis with connections to every part of the globe.
Estimates vary on the exact size of the population, with local government officials putting the figure at 11 million, though UN data from 2018 says 8.9 million people live in the central Chinese city.
• mega bus: （英国）大型巴士公司
Coronavirus n. 冠状病毒
Outbreak n. （疾病或战争的）爆发
• a cholera outbreak: 霍乱疫情爆发
• the outbreak of World War II: 二战爆发
Metropolis n. 大都市，大都会
(a metropolis is the largest, busiest, and most important city in a country or region)
Vary vi. 各不相同
(if several things of the same type vary, they are all different from each other)
• The taste vary from person to person.